package com.nowcoder.community.controller;

import com.nowcoder.community.annotation.LoginRequired;
import com.nowcoder.community.entity.Comment;
import com.nowcoder.community.entity.DiscussPost;
import com.nowcoder.community.entity.Page;
import com.nowcoder.community.entity.User;
import com.nowcoder.community.service.*;
import com.nowcoder.community.util.CommunityConstant;
import com.nowcoder.community.util.CommunityUtil;
import com.nowcoder.community.util.HostHolder;
import com.qiniu.util.Auth;
import com.qiniu.util.StringMap;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Controller
@RequestMapping("/user")
public class UserController implements CommunityConstant {
   private static final Logger logger= LoggerFactory.getLogger(UserController.class);

   @Value("${community.path.upload}")
   private String uploadPath;

   @Value("${community.path.domain}")
   private String domain;

    @Value("${server.servlet.context-path}")
    private String contextPath;

    @Autowired
    private UserService userService;
    @Autowired
    private HostHolder hostHolder;
    @Autowired
    private LikeService likeService;
    @Autowired
    private FollowService followService;
    @Value("${qiniu.key.access}")
    private String accessKey;
    @Value("${qiniu.key.secret}")
    private String secretKey;
    @Value("${qiniu.bucket.header.name}")
    private String headerBucketName;
    @Value("${qiniu.bucket.header.url}")
    private String headerBucketUrl;
    @Autowired
    private DiscussPostService discussPostService;
    @Autowired
    private CommentService commentService;

    @LoginRequired
    @RequestMapping(path = "/setting",method= RequestMethod.GET)
    public String getSettingPage(Model model){
        //上传文件名称
        String fileName=CommunityUtil.generateUUID();
        //设置响应信息
        StringMap policy=new StringMap();
        policy.put("returnBody",CommunityUtil.getJSONString(0));
        //生成上传凭证
        Auth auth= Auth.create(accessKey,secretKey);
        String uploadToken=auth.uploadToken(headerBucketName,fileName,3600,policy);
        model.addAttribute("uploadToken",uploadToken);
        model.addAttribute("fileName",fileName);
        return "/site/setting";

    }
    //更新头像路径
    @RequestMapping(path = "/header/url",method = RequestMethod.POST)
    @ResponseBody
    public String updateHeaderUrl(String fileName){
        if(StringUtils.isBlank(fileName))
        {
            return CommunityUtil.getJSONString(1,"文件名不能为空!");
        }
        String url=headerBucketUrl+"/"+fileName;
        userService.updateHeader(hostHolder.getUser().getId(), url);
        return CommunityUtil.getJSONString(0);
    }
    //废弃
    @LoginRequired
    @RequestMapping(path = "/upload",method = RequestMethod.POST)
    public String uploadHeader(MultipartFile headerImage, Model model){
        if(headerImage==null)
        {
            model.addAttribute("error","你还没有选择图片！");
            return "/site/setting";
        }
        String fileName = headerImage.getOriginalFilename();
        String suffix = fileName.substring(fileName.lastIndexOf("."));
        if(StringUtils.isBlank(suffix)){
            model.addAttribute("error","文件的格式不正确！");
            return "/site/setting";

        }
        //生成随机文件名
        fileName= CommunityUtil.generateUUID()+suffix;
        //确定图片存放的路径
        File dest=new File(uploadPath+"/"+fileName);
        try {
            //存储文件
            headerImage.transferTo(dest);
        } catch (IOException e) {
            logger.error("上传文件失败："+e.getMessage());
            throw new RuntimeException("上传文件失败，服务器发生异常！",e);
        }
       //更新头像路径
        // http://localhost:8087/community/user/header/xxx.png
        User user=hostHolder.getUser();
        String headUrl=domain+contextPath+"/user/header/"+fileName;
        userService.updateHeader(user.getId(),headUrl);
        return "redirect:/index";
    }
    //废弃
    @RequestMapping(path="/header/{fileName}",method = RequestMethod.GET)
    public void getHeader(@PathVariable("fileName")String fileName, HttpServletResponse response){
        //服务器存放的路径
        fileName = uploadPath + "/" + fileName;
        //文件后缀
        String suffix=fileName.substring(fileName.lastIndexOf(".")+1);
        //响应图片
        response.setContentType("image/"+suffix);
        try ( FileInputStream fis=new FileInputStream(fileName);
              OutputStream os = response.getOutputStream())
         {

            byte[] buffer=new byte[1024];
            int b=0;
            while((b=fis.read(buffer))!=-1){
                os.write(buffer,0,b);
            }

        } catch (IOException e) {
            logger.error("读取头像失败："+e.getMessage());
        }
    }
    //个人主页
    @RequestMapping(path = "/profile/{userId}",method = RequestMethod.GET)
    public String getProfilePage(@PathVariable("userId")int userId,Model model){
        User user=userService.findUserById(userId);
        if(user==null){
            throw new RuntimeException("该用户不存在！");  }
            //用户
            model.addAttribute("user",user);
            //点赞数量
            int likeCount = likeService.findUserLikeCount(userId);
            model.addAttribute("likeCount",likeCount);
            //关注数量
            long followeeCount = followService.findFolloweeCount(userId, ENTITY_TYPE_USER);
            model.addAttribute("followeeCount",followeeCount);
            //粉丝数量
            long followerCount = followService.findFollowerCount(ENTITY_TYPE_USER, userId);
            model.addAttribute("followerCount",followerCount);
            //是否已关注
            boolean hasFollowed=false;
            if(hostHolder.getUser()!=null){
                hasFollowed=followService.hasFollowed(hostHolder.getUser().getId(),ENTITY_TYPE_USER,userId);
            }
            model.addAttribute("hasFollowed",hasFollowed);
            return "/site/profile";
    }
    // 修改密码
    @RequestMapping(path = "/updatePassword", method = RequestMethod.POST)
    public String updatePassword(String oldPassword, String newPassword, Model model) {
        User user = hostHolder.getUser();
        Map<String, Object> map = userService.updatePassword(user.getId(), oldPassword, newPassword);
        if (map == null || map.isEmpty()) {
            return "redirect:/logout";
        } else {
            model.addAttribute("oldPasswordMsg", map.get("oldPasswordMsg"));
            model.addAttribute("newPasswordMsg", map.get("newPasswordMsg"));
            return "/site/setting";
        }
    }
    // 我的帖子
    @RequestMapping(path = "/mypost/{userId}", method = RequestMethod.GET)
    public String getMyPost(@PathVariable("userId") int userId, Page page, Model model) {
        User user = userService.findUserById(userId);
        if (user == null) {
            throw new RuntimeException("该用户不存在！");
        }
        model.addAttribute("user", user);

        // 分页信息
        page.setPath("/user/mypost/" + userId);
        page.setRows(discussPostService.findDiscussPostRows(userId));

        // 帖子列表
        List<DiscussPost> discussList = discussPostService
                .findDiscussPosts(userId, page.getOffset(), page.getLimit(),0);
        List<Map<String, Object>> discussVOList = new ArrayList<>();
        if (discussList != null) {
            for (DiscussPost post : discussList) {
                Map<String, Object> map = new HashMap<>();
                map.put("discussPost", post);
                map.put("likeCount", likeService.findEntityLikeCount(ENTITY_TYPE_POST, post.getId()));
                discussVOList.add(map);
            }
        }
        model.addAttribute("discussPosts", discussVOList);

        return "/site/my-post";
    }

    // 我的回复
    @RequestMapping(path = "/myreply/{userId}", method = RequestMethod.GET)
    public String getMyReply(@PathVariable("userId") int userId, Page page, Model model) {
        User user = userService.findUserById(userId);
        if (user == null) {
            throw new RuntimeException("该用户不存在！");
        }
        model.addAttribute("user", user);

        // 分页信息
        page.setPath("/user/myreply/" + userId);
        page.setRows(commentService.findUserCount(userId));

        // 回复列表
        List<Comment> commentList = commentService.findUserComments(userId, page.getOffset(), page.getLimit());
        List<Map<String, Object>> commentVOList = new ArrayList<>();
        if (commentList != null) {
            for (Comment comment : commentList) {
                Map<String, Object> map = new HashMap<>();
                map.put("comment", comment);
                DiscussPost post = discussPostService.findDiscussPostById(comment.getEntityId());
                map.put("discussPost", post);
                commentVOList.add(map);
            }
        }
        model.addAttribute("comments", commentVOList);

        return "/site/my-reply";
    }
}
